文章基本信息

标题：ESTIMATED JUSTIFICATION OF TECHNICAL DECISION ON STRENGTHENING REINFORCED CONCRETE MACHINE HALL FLOOR
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作者：Oleg D. Rubin ; Anton S. Antonov ; Sergey E. Lisichkin 等
期刊名称：Stroitel’stvo: Nauka i Obrazovanie
印刷版ISSN：2305-5502
出版年度：2019
卷号：9
期号：1
页码：1-16
DOI：10.22227/2305-5502.2019.1.4
语种：English
出版社：Moscow State University of Civil Engineering (MGSU)
摘要：In connection with the long-term operation of hydraulic structures (HPP), the installation of significant temporary loads, the presence of alternating effects on individual structural elements, it is possible to reduce the carrying capacity and strength of reinforced concrete structures.One of the most crucial elements is the reinforced concrete overlap of the machine hall, the work presents field and design studies, a proposal to strengthen the structures with external reinforcement.Materials and methods.The scientific and technical documentation was analyzed, instrumental studies and visual inspections of the state of the structures were carried out, and a 3D mathematical model was developed based on the finite element method.Multivariate non-linear computational studies of the actual stress-strain state of structures have been carried out.Results.Conducted visual and instrumental examination showed the presence of cracking on the lower edge of the reinforced concrete floor of the machine room.The simulation of the actual state of the structures has been carried out;according to the results of calculations, a schematic diagram of the gain of structures has been proposed.Conclusions.As a result of computational studies of stress-strain state, the occurrence of cracks on the lower edge of reinforced concrete floor of the machine hall was confirmed.When applying temporary technological loads to overlap, it is possible to achieve the yield strength of the reinforcement in certain zones.In order to ensure further safe operation of the structures, a conceptual amplification scheme based on the results of stress-strain state calculations has been proposed.
其他摘要：В связи с длительной эксплуатацией гидротехнических сооружений (ГТС), установкой существенных временных нагрузок, наличию знакопеременных воздействий на отдельные конструктивные элементы, возможно снижение несущей способности и прочности железобетонных ко
关键词：stressstrain state;crack floor;rebar of reinforced concrete floor;composite materials
其他关键词：напряженно-деформированное состояние;трещинообразование;усиление железобетонного перекрытия;композитные материалы;расчетные исследования;метод конечных элементов